【摘要】 对自然感染绵羊从春末夏初开始连续定期采集病料,包括病羊、羊圈及生活环境粪样、土样、脱落羊毛等,镜检查找和观察病原,用放大镜对羊体上的痒螨进行跟踪观察,同时记录温度。结果显示:绵羊痒螨在夏季存在潜伏期,其潜伏过程与温度的高低密切相关,绵羊痒螨夏季在平均气温20℃左右时开始进入潜伏期,大量螨虫死亡,痒螨寄生数量急剧减少,仅有少量带卵雌螨存活下来,到9月中旬气温下降,雌螨所产卵开始发育,10月上旬又形成痒螨寄生、繁殖的新高峰。更多还原

【Abstract】 The samples were collected continuously and regularly to natural infected sheep of psoroptes ovis from later spring and early summer,including sick sheep,fecal samples from the sheepyard and the living environment,soil samples,the caducous wool and so on,which were observed pathogen by the microscopic examination.Furthermore,the tracing observation of Psoroptes mites on sheep body were analyzed by magnifier,meanwhile the temperature was noted.The results showed that: Psoroptes mites began to come into latent period in summer,and the latent process was closely related to the level of temperature.Psoroptes mite come into latent period after continuous average day temperature getting about 20℃,and a great deal of Psoroptes mites died,the parasitic number of it decreased sharply,only a few female mite with eggs could survive.The eggs began to develop in later September,following the air temperature dropping.Psoroptes mites formed a new parasitic and propagative peak in early october.更多还原